The last time I took a ballet class, it was under the watchful eye of a Russian teacher with a bun, who talked a lot about turnout and spotting. Then I went to Frame. Here you are more likely to encounter a top-knot than a ballet bun, and more likely to plié to ‘90s dance music than strained piano chords. While not strictly speaking a ballet class, Frame’s “Barre” series of classes (choose from Rock, Cardio, or the classic, Frame), are based around the core principles of ballet’s disciplined workout phase – barrework. Unfortunately for me, this is the element of ballet I most despised as a child – and it hasn’t got any easier. In fact, Cardio Barre, the class I found myself in last week, is possibly the most difficult aerobic workout I’ve encountered. Jumping constantly for minutes on end while maintaining the pulled-up tucked-in poised demeanour that characterises the ballet body? Not easy. The good news is there’s no ballet experience required – so ravers, gym bunnies, yoga-nuts and marathon runners are all welcome. I just wouldn’t chance it if you’re a fitness defector.

Cardio Barre, £10, (£8 to Frame cardholders), Frame, London, moveyourframe.com